Improvement



NITED STATES PATENT OFFICE.

G. W. BILLINGS, OF ST. PAUL, MINNESOTA.

llVlPROVElVlENT lN RTA'RY FORCING-PUIVEPS.

Specification forming part of Letters Patent 36,88, dated November ll, 18H2.

To aZZ whom it may concern:

Be it known that I, G. W. BrLLINGs, of St. Paul, in the county of Ramsey, in the State of Minnesota, have invented new and useful Improvements in Rotary Forcing-Pumps; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in Which- Figures l, 2, and 3 are several views of a rotary forcingvpump with said improvements attached, and Figs. 4 and 5 are views of such improvements detached.

The construction and operation of the same are as follows: A and A is a stationary hollow cylinder. i

B and B is an eccentric cam-Wheel revolving within the cylinder A and A' by means ofthe chain lG.

D and cl is a follower attached to the cam- Wheel B and to the cut-off F and F' at E.

G and Gis a stop attached to the foot of the cut-oft' F and F' and forming a part of it.

H and I are ports opening from the cylinder A', the one at H opening into the tube Jand J' and the one at I opening into the external Water.

The revolution of the carn-wheel B' forcibly ejects the fluid through the port H.

hen desirable `to force the fluid through a small pipe leading directly from the axis L of the cam-wheel, instead of through thetube J and the port H, aport, K, in the side ofthe cani Wheel, communicating with a receiver in the side ofthe wheel, running into the axis, as seen in Fig. 3, will be necessary, and in this case the stop G at the foot of the cutoff F acts as a valve to close the port I when the port K is brought opposite to it in the revolution of the cam, thus preventing the escape of the fluid and saving power.

The cam-wheel is intended to be constructed and operatedas represented in Fig. 3, or as represented in Fig. 4,where it is formed by the combination of tWo segments of the single wheel, thus forming a kind of doubleeccentric cam-wheel.

Fig. 5 is a View of the cam-Wheel, cylinder, cut-off, driving-wheel, and follower.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The eccentric revolving cam-Wheel B B', in combination With the stationary cylinder A A', and with the adjustable cut-off F F', constructed and operating as represented in Fig. 8.

2. The stop G G', in combination with the cutoff F F and theeccentric and connectingrod D Land cam-Wheel B B', all operating in the manner and forv the purposes substantially as set forth..

` G. IV. BILLINGS. [.L. s] Witnesses:

D. D. MERRILL, JOHN A. LLOYD. 

